Self-adjusting bearing-nut.



P. F. WESTON & F. G. MUELLER.

SELF ADIUSTING BEARING NUT APPLICATION FILED 001.6; mm.

Patehted Sept. 10,1913."

UNITED STATES PATENT OFFICE.

PAUL F. WESTON AND FRANK o. MUELLER, or sc'RAN'ron, PENNSYLVANIA.

SELF-ADJUSTING BEARING-NUT.

.To all "whom it may concern:

Be it lmown that we, PAUL F. lVns'roN and FRANK (l. MUELLER, citizens of the United States, residing, at Sc anton, in the county ofLaekmvanua and State of Pennsylvania, have invented new and useful improvements in Self-Adjusting .licaringh'uts. of which the followingis a specification.

This ii'nention relates to llllt and it has particular reference to a not whirh'wili antomaticallv adjust itself to compensate for wear on the parts. or shrinkage of the parts assembled by the nut and the bob on which it is mounted.

The invention. has for its object to produce a self-adjusting or self-tightening nut. of simple and improved constrm-tion which may be adraniagzeonsly used in connection with bearings of various kinds for the pur pose of taking up and compensating for Wear.

A further object of the invention is to produce a self-adjrsting and self-tightening .will readily appear I hereinafter more fully described and parhers A and B to nut crmiprisingtwo parts or members havinn opposedspirally (l HPUHtNl ram faces andassembling means t said parts or members including; a housing and a spring whereby one member of the nntwill he-tnrned or rotated about the common axis of the two parts ormembers.

lVit-h these and other ends in View which as the nature of thejnvent-ion isbetler um'lcrstood, the same consists in the improved construction, arrangement and combination of parts which will be tiei-dnrlypointed out in the claims. j. -In the accompanying drawing has been illustrated a. simple and preferred form of the invention, it being, however, understood that no limitation is necessarily made to the precise structural detaiistherein exhibited," alterations and modlfica-n may be but that changes, tions Within the scope of the claims resorted to when d'esired. v

"In the drawings,-- Figure 1 is a side elevation partly in. seetionfishowing the improved nut'and'bolt on plnn views shovi'ing the opposed faces ofthe n t.

Specification of Letters Patent,

which the same-is mounted, and showing alsoda' pert'of e bearingto which it is apqpherfl.

- Fig. 2 is asectlonal vlewteken on the lme parts or members" of the Patented Sept. 10, 1918.

Application filed October 6, 1917. Serial No.195,l51.

Fig. 5 is a detail side view on a reduced scale showing a bearing to \\'ll1tll the nut 1s applied;

Corresponding parts in the several figures are denoted by like characters oi rol'erenoe. The improved nutwhiuh has been shown in Figs. 1 and :2 as being mounted one bolt 15, IS composed of two principaipnrts or sections A and B. The part is: internally threaded as at 16 for en ant-1min with the thread 17 of the bolt 15. Said member A is also provided with a l'icad 1e constituting a wrench seat. The part or member 3 has a bore if! of a iliameter slightly exceedingthat ol the threaded poltion f the bolt. The opposed faces of the parts or members .i and ii are provided with spirally disposed (2111] faces 20 and, 21. The external circumferential faces ofthe parts or members A and I) are provided with corresponding grooves 22. 23 for the accommodation of which are embedded in or otherwise eonnerted with the respective members A and B as indicated at 25.26. the. force of the spring being expended to cause the rotation of the memherB with respect to the member A, therebucausing the said members A and B to be forced or spread apart by the contacting action of the opposed cam faces. The spring 24- is inclosed bva cvlindrieal housing 27 having terminal flanges .28, .59 engagingannnlar grooves 30. 31 in the re spective members A and B. one or both of said grooves bei 11g of suiiicientwidth to perunit the lengthw se movement of the memence of the contacting camfaces 20 and 21.

An ordinary jam nut 32 has been shown for the purpose of locking the nut member A in adjusted position on the bolt .15, but

part or I a roiled spring' 24. the ends of each other under the influth use of such jam nut is Well known in the art and the same is not herein claimed.

In operation, when the nut member A s tightened on the bolt it will tend to drive the member B in advence of itself, the op posed cam faces of the members A and B prodl'icin g'a. ratchet whereby the member B willbe tightened in advance of the member A, the spring- 24 being at the same time tensioned. When the parts have been roperly tightened the jam nut 32 may be p need in position and tightened. Should wear or shrinkage occur, the nut member B will be advanced by the force of the spring 24-and' w ll thus be maintained ixta. seated position,

causing the parts assembled by the' bolt and the nut to be held very securely. If the a wear or shrinkage should exceed the power of compensation of the spring 24, the nut member A may be retightened and the jam nut32 readjusted. A particular advantage of the invention is that the nut will not cramp or create excessive pressure or friction to a shaft or running part, nor will any pressure tend to push the nut back as'it' 1s interlocking at every point.

We claim V l. A self-adjusting nut comprising two nmnbers having opposed spirally disposed can'rshaped meeting; tat-es producing interv engaging ratchets, and a coiled spring ter minally ronncctcd with the two members to rotate one with respect to the other when under tension.

' A. self-adjusting nut comprising two incn'ibers having opposed spirally disposed ramshaped meeting taces producing interengaging ratchets, and a coiled spring terinina'lly.connected with the two members to rotateone with respect to the other when under tension; one of said members being internally threaded and the other member liavingan inithrimded bore of-larger draweter thanthe threaded portion'of thefirst mentioned inen'iber.

3; A selfau'ljueting nut-comprising two members having opposed sp1r-a-1ly disposed cam-shaped meeting faces producing interengaging rat-(allots; and a coiled spring terminally connected with thetwo members to rotate one with respect to the other when under tension, one of said members being internally threaded and the other member having an un'threaded bore of larger diameter than the threaded portion of the firstmentioned member, said internal threaded;

member havin an eigterna]. wrench seat, 4. A self-adpistlng nut con'iprising two members having opposed spirally disposed eanrshaped meeting: faces producing interengaging ratchcts; one of said nn-niln-rs beinginternally threaded and the other incinher having an untln'eaded bore of larger diainelrr than the threaded portion oiv the first-mentioned member, said internal threaded member having an external n'rcnrh seat, in combination. with a spring tcrnnnally connected with the two n'n-n'd'iers and.

tending to rotate one of said respect to the other member.

5." A self-tightening nut comprising two members having opposed ratchet faces and one of said members being internally thread ed and the other member being provided with abore of a diameter exceeding that of members wit h .the threaded portion of the first-mentioned member, in combination with an externaltv disposed spring terminally coimectedwith the two members and a housingsurrounding saidspring, said housing having terminal flanges for the receptionof which the two members are provided with annular grooves. v v v v 6. A self-tightening nut eom 'irisinp, two

members having opposed ratchet faces and one of said members being internally threaded and the other member being provided with a bore of a diameter exceeding-that of the threaded portion of the first-mentioned member; in combination with an'externally disposed spring terminally connected with the two members and a housing surrounding said spring, said housing havingterminal. flanges for the reception of which the two members are provided. with. annular grooves, said grooves being dimensioned to permit longitudinal movement of the housing with respect to one of the men'ibers.

In testimony whereof we affix our signatures.

' PAUL F. WEUJTON.

FRANK e. MUELLER. 

